main.ts

import { app, BrowserWindow, screen } from 'electron';
import * as path from 'path';
import * as url from 'url';

let win, serve;
const args = process.argv.slice(1);
serve = args.some(val => val === '--serve');

function createWindow() {

    const electronScreen = screen;

    // Create the browser window.
    win = new BrowserWindow({
        center: true,
        width: 800,
        height: 800
    });

    if (serve) {
        require('electron-reload')(__dirname, {
            electron: require(`${__dirname}/node_modules/electron`)
        });
        win.loadURL('http://localhost:4200');
    } else {
        win.loadURL(url.format({
            pathname: path.join(__dirname, 'dist/index.html'),
            protocol: 'file:',
            slashes: true
        }));
    }

    win.setMenu(null);
    if (process.mainModule.filename.indexOf('app.asar') === -1) {
        win.webContents.openDevTools();
    }

    const pkge = require('./package.json');
    win.setTitle(pkge.title + ' - ' + pkge.version);
    win.on('page-title-updated', function (e) {
        e.preventDefault();
    });

    // Emitted when the window is closed.
    win.on('closed', () => {
        // Dereference the window object, usually you would store window
        // in an array if your app supports multi windows, this is the time
        // when you should delete the corresponding element.
        win = null;
    });

}

try {

    // This method will be called when Electron has finished
    // initialization and is ready to create browser windows.
    // Some APIs can only be used after this event occurs.
    app.on('ready', createWindow);

    // Quit when all windows are closed.
    app.on('window-all-closed', () => {
        // On OS X it is common for applications and their menu bar
        // to stay active until the user quits explicitly with Cmd + Q
        if (process.platform !== 'darwin') {
            app.quit();
        }
    });

    app.on('activate', () => {
        // On OS X it's common to re-create a window in the app when the
        // dock icon is clicked and there are no other windows open.
        if (win === null) {
            createWindow();
        }
    });

} catch (e) {
    // Catch Error
    // throw e;
}